Journal of Systems Engineering and Electronics ›› 2012, Vol. 23 ›› Issue (1): 10-15.doi: 10.1109/JSEE.2012.00002

• ELECTRONICS TECHNOLOGY • Previous Articles     Next Articles

Blind CFO estimation algorithm for OFDM systems by using generalized precoding and trilinear model

Xiaofei Zhang∗ and Dazhuan Xu   

  1. Electronic Engineering Department, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P. R. China
  • Online:2012-02-25 Published:2010-01-03


This paper discusses the blind carrier frequency offset (CFO) estimation for orthogonal frequency division multiplexing (OFDM) systems by utilizing trilinear decomposition and generalized precoding. Firstly, the generalized precoding is employed to obtain multiple covariance matrices which are requisite for the trilinear model, and then a novel CFO estimation algorithm is proposed for the OFDM system. Compared with both the joint diagonalizer and estimation of signal parameters via rotational invariant technique (ESPRIT), the proposed algorithm enjoys a better CFO estimation performance. Furthermore, the proposed algorithm can work well without virtual carriers. Simulation results illustrate the performance of this algorithm.